[1] Likewise in other lexica; see the references at Photius kappa1274 Theodoridis. The headword is masculine accusative singular or neuter nominative/accusative singular of this adjective (cf. kappa 2799). Theodoridis notes Naber's opinion that it is quoted from Aristophanes, Acharnians 703, and adds another Aristophanic suggestion of his own (Plutus [Wealth] 266).
[2] In this version of a Greek proverb the adjective kufo/n (neuter singular) describes the object created out of the piece of wood. Here the proverb emphasizes the form of the object created: anything with a crooked form. It has then to be distinguished from the version found at epsilon 555 above, with the variant to\ kou=fon instead of kufo/n, i.e. a thing without value, without weight. Notice also the variant ku/fwn, i.e. masculine singular, in Zenobius 4.7, Apostolius 6.95 and other paroemiographers ('a crooked man might come'). Even granted these differences in the object mentioned, the overall meaning of the proverb is always the same as here, however; for a different sense in Apuleius and elsewhere see under epsilon 555.